Imagine that you have a million euros under your mattress, just sitting there since 2014. Is it still worth a million euros seven years later?

To get the obvious stuff out of the way: yes, cryptocurrencies are risky. Anyone who’s spent five minutes reading about them knows that they’re new, unproven, and can rise and fall in value quickly. ‍So let’s teach you how to handle something as risky as cryptocurrencies.